Hadronic light-by-light contribution to the muon $g-2$ using twisted-mass fermions

Abstract

We report on our preliminary results from the lattice-QCD computation of the hadronic light-by-light (HLbL) contribution to the anomalous magnetic moment of the muon. We use twisted-mass $N_f=2+1+1$ gauge ensembles at the physical point generated by the Extended Twisted Mass Collaboration (ETMC).